A jaw crusher toggle plate failure online monitoring method, system, device and medium

Abstract

The application discloses a jaw crusher toggle plate failure online monitoring method, system, equipment and medium, which comprises the following steps: acquiring a measured fluctuation curve diagram of a moving jaw in a movement cycle; comparing the measured fluctuation curve diagram with a preset standard fluctuation curve diagram to obtain a first comparison result; if the first comparison result is that the toggle plate is running normally, returning to acquiring the measured fluctuation curve diagram of the moving jaw in the movement cycle; if the first comparison result is that the toggle plate is running abnormally, acquiring a measured motion trajectory diagram of the moving jaw in the movement cycle; comparing the measured motion trajectory diagram with a preset standard motion trajectory diagram to obtain a second comparison result; if the second comparison result is that the toggle plate is running normally, returning to acquiring the measured fluctuation curve diagram of the moving jaw in the movement cycle; if the second comparison result is that the toggle plate is running abnormally, sending an alarm information, and the application has the advantages of realizing online monitoring of toggle plate failure and high monitoring precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of equipment failure monitoring, in particular to a jaw crusher toggle plate failure online monitoring method, system, device and medium. BACKGROUND

[0002] The jaw crusher, referred to as a jaw crusher, is composed of two jaw plates, a moving jaw and a fixed jaw, to form a crushing cavity. The jaw crusher simulates the movement of the two jaws of an animal to complete the crushing operation of the material. The moving jaw of the jaw crusher is a four-bar linkage mechanism, and the eccentric shaft and the toggle plate are two crankshafts of the four-bar linkage mechanism.

[0003] When the jaw crusher encounters an overload, the toggle plate, as the most important overload protection device, will be fractured or deformed to make the moving mechanism of the jaw crusher fail, thereby protecting the main machine of the jaw crusher. When the toggle plate is fractured, deformed or fails in any other form, the device needs to be shut down in time. However, the toggle plate is inside the entire device, and the existing detection method can only check whether the toggle plate is abnormally deformed when the jaw crusher is shut down, which is difficult to realize online monitoring, greatly reduces the safety of the device operation, and affects the work efficiency. SUMMARY

[0004] The main purpose of the present application is to provide a jaw crusher toggle plate failure online monitoring method, system, device and medium, which aims to solve the technical problem that the existing jaw crusher toggle plate detection method is difficult to realize online monitoring.

[0005] To achieve the above-mentioned purpose, the present application provides a jaw crusher toggle plate failure online monitoring method, which comprises the following steps:

[0006] An actual fluctuation curve graph of the moving jaw in a movement cycle is obtained; wherein the movement cycle is a cycle in which the moving jaw completes at least one reciprocating motion;

[0007] The actual fluctuation curve graph is compared with a preset standard fluctuation curve graph to obtain a first comparison result; wherein the standard fluctuation curve graph is a fluctuation curve graph formed when the moving jaw is normally operated, and the first comparison result includes normal operation of the toggle plate or abnormal operation of the toggle plate;

[0008] If the first comparison result is normal operation of the toggle plate, the actual fluctuation curve graph of the moving jaw in the movement cycle is obtained again; if the first comparison result is abnormal operation of the toggle plate, an actual motion trajectory graph of the moving jaw in the movement cycle is obtained;

[0009] The actual motion trajectory graph is compared with a preset standard motion trajectory graph to obtain a second comparison result; wherein the standard motion trajectory graph is a motion trajectory graph formed when the moving jaw is normally operated, and the second comparison result includes normal operation of the toggle plate or abnormal operation of the toggle plate;

[0010] If the second comparison result is that the toggle plate is running normally, return to obtaining the measured fluctuation curve diagram of the moving jaw in the motion cycle; if the second comparison result is that the toggle plate is running abnormally, send an alarm message.

[0011] Optionally, obtaining the measured fluctuation curve diagram of the moving jaw in the motion cycle comprises:

[0012] In the motion cycle, the interval value between a ranging point and a first detection point is obtained every first preset time interval to obtain an interval data set; the ranging point is a position point of a distance detection sensor arranged inside the jaw crusher, and the first detection point is a target point arranged on the moving jaw and close to the distance detection sensor.

[0013] According to the interval data set, a measured fluctuation curve diagram is generated.

[0014] Optionally, the measured fluctuation curve diagram is compared with a preset standard fluctuation curve diagram to obtain a first comparison result, comprising:

[0015] The measured fluctuation curve diagram is compared with the preset standard fluctuation curve diagram in terms of coincidence degree to obtain a first coincidence degree difference value.

[0016] The first coincidence degree difference value is compared with a preset first threshold value.

[0017] If the first coincidence degree difference value is greater than the first threshold value, it is obtained that the first comparison result is that the toggle plate is running abnormally; if the first coincidence degree difference value is less than or equal to the first threshold value, it is obtained that the first comparison result is that the toggle plate is running normally.

[0018] Optionally, the measured fluctuation curve diagram is compared with a preset standard fluctuation curve diagram to obtain a first comparison result, comprising:

[0019] A first peak value or a first trough value in the measured fluctuation curve diagram is obtained.

[0020] A second peak value or a second trough value in the preset standard fluctuation curve diagram is obtained.

[0021] A first fluctuation difference value or a second fluctuation difference value is obtained; the first fluctuation difference value is a difference value between the first peak value and the second peak value, and the second fluctuation difference value is a difference value between the first trough value and the second trough value.

[0022] The first fluctuation difference value or the second fluctuation difference value is compared with a preset second threshold value.

[0023] If the first fluctuation difference value or the second fluctuation difference value is greater than the second threshold value, it is obtained that the first comparison result is that the toggle plate is running abnormally; if the first fluctuation difference value or the second fluctuation difference value is less than or equal to the second threshold value, it is obtained that the first comparison result is that the toggle plate is running normally.

[0024] Optionally, the measured motion trajectory graph of the moving jaw in a motion cycle is obtained, comprising:

[0025] In the motion cycle, the coordinate positions of second detection points are obtained every second preset time interval; wherein the second detection points are marker points arranged on the moving jaw;

[0026] The coordinate positions of the plurality of second detection points are curve-fitted to obtain the measured motion trajectory graph.

[0027] Optionally, the measured motion trajectory graph is compared with a preset standard motion trajectory graph to obtain a second comparison result, comprising:

[0028] The measured motion trajectory graph is compared with the preset standard motion trajectory graph in terms of coincidence degree to obtain a second coincidence degree difference value;

[0029] The second coincidence degree difference value is compared with a preset third threshold value;

[0030] If the second coincidence degree difference value is greater than the third threshold value, the second comparison result is that the toggle plate is running abnormally, and if the second coincidence degree difference value is less than or equal to the third threshold value, the second comparison result is that the toggle plate is running normally.

[0031] Optionally, after the alarm information is sent, further comprising:

[0032] A stop control signal is sent to control the jaw crusher to stop running.

[0033] To achieve the above-mentioned purpose, the present application also provides a jaw crusher toggle plate failure online monitoring system, comprising:

[0034] A curve graph acquisition module is configured to obtain a measured fluctuation curve graph of the moving jaw in a motion cycle; wherein the motion cycle is a cycle in which the moving jaw completes at least one reciprocating motion;

[0035] A first comparison module is configured to compare the measured fluctuation curve graph with a preset standard fluctuation curve graph to obtain a first comparison result; wherein the standard fluctuation curve graph is a fluctuation curve graph formed when the moving jaw is running normally, and the first comparison result includes that the toggle plate is running normally or abnormally;

[0036] A first data processing module is configured to return to obtaining the measured fluctuation curve graph of the moving jaw in the motion cycle if the first comparison result is that the toggle plate is running normally, and to obtain the measured motion trajectory graph of the moving jaw in the motion cycle if the first comparison result is that the toggle plate is running abnormally;

[0037] The second comparison module is configured to compare the measured movement trajectory graph with a preset standard movement trajectory graph to obtain a second comparison result, wherein the standard movement trajectory graph is a movement trajectory graph formed by the moving jaw in normal operation, and the second comparison result includes normal operation of the toggle plate or abnormal operation of the toggle plate.

[0038] The second data processing module is configured to return to acquire the measured fluctuation curve graph of the moving jaw in a movement cycle if the second comparison result is normal operation of the toggle plate, and send an alarm information if the second comparison result is abnormal operation of the toggle plate.

[0039] To achieve the above object, the present application further provides a computer device, which comprises a memory and a processor, the memory stores a computer program, and the processor executes the computer program to realize the above method.

[0040] To achieve the above object, the present application further provides a computer readable storage medium, which stores a computer program, and the processor executes the computer program to realize the above method.

[0041] The present application can achieve the following beneficial effects:

[0042] Since the moving jaw will pull the elbow plate to move correspondingly when moving, and the elbow plate is relatively small in size and is limited in position, it is difficult to capture its movement trajectory. Therefore, the application obtains a measured fluctuation curve of the moving jaw in a movement cycle. The measured fluctuation curve can represent the distance change fluctuation of the moving jaw relative to a certain point. The measured fluctuation curve is compared with a standard fluctuation curve. If the elbow plate fails, the movement trajectory of the moving jaw will change greatly, resulting in a certain difference between the measured fluctuation curve and the standard fluctuation curve. Therefore, a first comparison result can be obtained according to the comparison difference. The detection method is relatively efficient, and the detection result can be quickly obtained. However, the detection accuracy is easily limited by the vibration of the jaw crusher itself and the harsh environment, and there may be a large detection error. Therefore, in order to improve the detection accuracy, when the first comparison result is that the elbow plate is abnormally running, the measured movement trajectory graph of the moving jaw in the movement cycle is further obtained, and the measured movement trajectory graph is compared with a standard movement trajectory graph. If the elbow plate fails and causes the movement trajectory of the moving jaw to change greatly, the measured movement trajectory graph obtained at this time will have a certain difference from the standard movement trajectory graph, so as to obtain a second comparison result. If the second comparison result is that the elbow plate is normally running, it means that the detection of the measured fluctuation curve is incorrect, and the step of obtaining the measured fluctuation curve of the moving jaw in the movement cycle is returned. If the second comparison result is also that the elbow plate is abnormally running, it means that the elbow plate actually fails. At this time, an alarm information is sent to inform the staff to handle it in time. In summary, the application reflects the running state of the elbow plate from the side by detecting the running condition of the moving jaw, realizes the online monitoring of the elbow plate of the jaw crusher, does not need to stop for inspection, ensures the work efficiency, and combines the two detection methods to ensure the monitoring accuracy, low error and fast response. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the application, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0044] Figure 1 A flowchart of a jaw crusher elbow plate failure online monitoring method in an embodiment of the application;

[0045] Figure 2 A schematic diagram of the internal structure of a jaw crusher in an embodiment of the application;

[0046] Figure 3 A schematic diagram of a standard fluctuation curve in an embodiment of the application;

[0047] Figure 4 A schematic diagram of a measured fluctuation curve obtained in an embodiment of the application;

[0048] Figure 5 is a schematic diagram of a standard motion trajectory graph in the embodiments of the present application;

[0049] Figure 6 is a schematic diagram of a measured motion trajectory graph obtained in the embodiments of the present application.

[0050] Reference signs:

[0051] 1 - moving jaw, 2 - distance detection sensor, 3 - rack body, 4 - toggle plate, 5 - eccentric shaft, 6 - pull rod, 7 - compression spring, 8 - belt pulley, 9 - fixed jaw, 10 - first detection point.

[0052] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work under the premise of the present application are within the scope of protection of the present application.

[0054] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0055] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0057] Embodiment 1

[0058] Referring to Figures 1-6 The embodiment provides an online monitoring method for elbow plate failure of a jaw crusher, comprising the following steps:

[0059] An actual fluctuation curve graph of the moving jaw 1 in a movement cycle is obtained; wherein the movement cycle is a cycle in which the moving jaw 1 at least completes a reciprocating motion;

[0060] The actual fluctuation curve graph is compared with a preset standard fluctuation curve graph to obtain a first comparison result; wherein the standard fluctuation curve graph is a fluctuation curve graph formed when the moving jaw 1 is in normal operation, and the first comparison result includes that the elbow plate 4 is in normal operation or the elbow plate 4 is in abnormal operation;

[0061] If the first comparison result is that the elbow plate 4 is in normal operation, the actual fluctuation curve graph of the moving jaw 1 in the movement cycle is returned to be obtained, and if the first comparison result is that the elbow plate 4 is in abnormal operation, an actual motion trajectory graph of the moving jaw 1 in the movement cycle is obtained;

[0062] The actual motion trajectory graph is compared with a preset standard motion trajectory graph to obtain a second comparison result; wherein the standard motion trajectory graph is a motion trajectory graph formed when the moving jaw 1 is in normal operation, and the second comparison result includes that the elbow plate 4 is in normal operation or the elbow plate 4 is in abnormal operation;

[0063] If the second comparison result is that the elbow plate 4 is in normal operation, the actual fluctuation curve graph of the moving jaw 1 in the movement cycle is returned to be obtained, and if the second comparison result is that the elbow plate 4 is in abnormal operation, an alarm information is sent.

[0064] As Figure 2As shown, the jaw crusher movement mechanism model is a double-crank four-bar mechanism, the moving jaw 1 is the connecting rod of the four-bar mechanism, the eccentric shaft 5 and the elbow plate 4 are the two cranks of the four-bar mechanism. After the jaw crusher is started, the motor drives the eccentric shaft 5 to rotate through the belt and the belt pulley 8, and the moving jaw 1 makes periodic reciprocating motion around the eccentric shaft 5 to the fixed jaw 9, and sometimes approaches and sometimes leaves. When the moving jaw 1 approaches the fixed jaw 9, the ore between the two jaw plates is subjected to crushing, bending and splitting effects and is broken. When the moving jaw 1 leaves the fixed jaw 9, the broken ore is discharged through the discharge port of the crusher under the action of gravity. Since the moving jaw 1 is directly suspended on the eccentric shaft 5, when the eccentric shaft 5 rotates in the counterclockwise direction, it directly drives the moving jaw 1 to make complex oscillation. The movement trajectory of each point on the moving jaw 1 is an ellipse at the top of the crushing cavity, a more flattened ellipse in the middle, and almost reciprocating at the bottom. The pull rod 6 and the compression spring 7 provide the moving jaw 1 with a return swing force to protect the elbow plate 4 (the above-mentioned related parts are arranged on the frame body 3 of the jaw crusher).

[0065] Therefore, in the present embodiment, based on the structure of the above-mentioned jaw crusher and its working principle, since the moving jaw 1 will pull the elbow plate 4 to move correspondingly when moving, and the elbow plate 4 is relatively small in size and is difficult to capture its movement trajectory due to the limitation of position, therefore, in the present embodiment, the measured fluctuation curve graph of the moving jaw 1 in the movement cycle is obtained, which can represent the distance change fluctuation of the moving jaw 1 relative to a certain fixed point. The measured fluctuation curve graph is compared with the standard fluctuation curve graph. If the elbow plate 4 fails, the movement trajectory of the moving jaw 1 will change greatly, resulting in a certain difference between the measured fluctuation curve graph and the standard fluctuation curve graph, so that the first comparison result can be obtained according to the comparison difference. This detection method is relatively efficient and can quickly obtain the detection result, but the detection accuracy is easily limited by the vibration of the jaw crusher itself and the harsh environment, and there may be a large detection error. Therefore, in order to improve the detection accuracy, when the first comparison result is that the elbow plate 4 is running abnormally, the measured movement trajectory graph of the moving jaw 1 in the movement cycle is further obtained, and the measured movement trajectory graph is compared with the standard movement trajectory graph. If the elbow plate 4 fails, the movement trajectory of the moving jaw 1 changes greatly, and the measured movement trajectory graph obtained at this time has a certain difference with the standard movement trajectory graph, so that the second comparison result is obtained. If the second comparison result is that the elbow plate 4 is running normally, it means that the detection of the measured fluctuation curve graph is wrong, and then the step of obtaining the measured fluctuation curve graph of the moving jaw 1 in the movement cycle is returned. If the second comparison result is also that the elbow plate 4 is running abnormally, it means that there is indeed an elbow plate 4 failure condition, and at this time an alarm information is sent to inform the staff to handle it in time. In summary, the present embodiment reflects the running state of the elbow plate 4 by detecting the running condition of the moving jaw 1, realizes the online monitoring of the elbow plate 4 of the jaw crusher, does not need to stop for inspection, ensures the working efficiency, and combines the two detection methods to ensure the monitoring accuracy, low error and fast response.

[0066] It should be noted that the reason why the embodiment adopts the mode of detecting the measured fluctuation curve graph first and then detecting the measured motion trajectory graph is that the measured fluctuation curve graph can be quickly generated, which is beneficial to improve the efficiency, but the precision is not high, so it is necessary to detect the measured motion trajectory graph for supplementary comparison, and the detection precision of the measured motion trajectory graph is relatively high, but the data processing efficiency is relatively low, that is, the detection efficiency is relatively low, if only the measured motion trajectory graph is used for detection, there is the disadvantage of not timely detection, therefore, the embodiment balances the detection efficiency and detection precision by combining the two detection means, so as to achieve the online monitoring demand of high monitoring precision and fast response. Of course, according to the actual demand, only one of the above detection means can be used for monitoring the failure of the toggle plate 4 on the jaw crusher.

[0067] As an optional embodiment, if the second comparison result is that the toggle plate 4 is running normally, the method further comprises the following steps:

[0068] The current iteration number is obtained, and the current iteration number is compared with the preset number;

[0069] If the current iteration number is greater than the preset number, an alarm information is sent, and if the current iteration number is less than or equal to the preset number, the measured fluctuation curve graph of the moving jaw 1 in the motion cycle is returned.

[0070] In the embodiment, when it is detected that the first comparison result is that the toggle plate 4 is running abnormally, but the second comparison result is that the toggle plate 4 is running normally, the current iteration number is calculated at this time, if the preset number is exceeded, it means that the first comparison result and the second comparison result are inconsistent for many times, at this time, the first comparison result or the second comparison result may be distorted due to the fault of the corresponding detection device, at this time, an alarm information is sent to remind the staff to check the specific fault reason in time, so as to further ensure the monitoring precision.

[0071] As an optional embodiment, the measured fluctuation curve graph of the moving jaw 1 in the motion cycle comprises:

[0072] In the motion cycle, the interval value between the ranging point and the first detection point 10 is obtained every first preset time to obtain the interval data set, wherein the ranging point is the position point of the distance detection sensor 2 arranged in the jaw crusher, and the first detection point 10 is the target point arranged on the moving jaw 1, and the first detection point 10 is close to the distance detection sensor 2;

[0073] According to the interval data set, the measured fluctuation curve graph is generated.

[0074] In the embodiment, the distance detection sensor 2 can obtain the interval value between the ranging point and the first detection point 10 every first preset time (for example, 0.5 seconds), and when the moving jaw 1 moves, the interval value periodically changes within a fixed range. When the toggle plate 4 is abnormal, it is equivalent to the length of one of the cranks in the double-crank four-bar mechanism changing, and the movement trajectory of the moving jaw 1 will be different from that in the normal state, and the obtained actual fluctuation curve will also change. Therefore, the interval data set is formed by detecting a plurality of interval values, a coordinate system is constructed with time as the x-axis and the interval value as the y-axis, each data of the interval data set is placed on the corresponding position of the coordinate system to form a point, and the adjacent points are curve-fitted to finally produce the actual fluctuation curve.

[0075] As an optional embodiment, the actual fluctuation curve is compared with the preset standard fluctuation curve to obtain a first comparison result, including:

[0076] The actual fluctuation curve is compared with the preset standard fluctuation curve in terms of coincidence degree to obtain a first coincidence degree difference value;

[0077] The first coincidence degree difference value is compared with a preset first threshold value;

[0078] If the first coincidence degree difference value is greater than the first threshold value, it is obtained that the first comparison result is that the toggle plate 4 is running abnormally, and if the first coincidence degree difference value is less than or equal to the first threshold value, it is obtained that the first comparison result is that the toggle plate 4 is running normally.

[0079] In the embodiment, the actual fluctuation curve generated when the toggle plate 4 is abnormal cannot be completely coincided with the standard fluctuation curve, so the first coincidence degree difference value is obtained by comparing the actual fluctuation curve with the standard fluctuation curve in terms of coincidence degree. The first coincidence degree difference value can represent the area of the intersection part after the actual fluctuation curve and the standard fluctuation curve are fused, and considering the error influence, a first threshold value is set. When the first coincidence degree difference value is greater than the first threshold value, it can be indicated that there is a risk of toggle plate 4 running abnormally, which can quickly respond and the detection result is accurate.

[0080] As another optional embodiment, the actual fluctuation curve is compared with the preset standard fluctuation curve to obtain a first comparison result, including:

[0081] A first peak value or a first trough value in the actual fluctuation curve is obtained;

[0082] A second peak value or a second trough value in the preset standard fluctuation curve is obtained;

[0083] A first fluctuation difference value or a second fluctuation difference value is obtained; wherein the first fluctuation difference value is the difference between the first peak value and the second peak value, and the second fluctuation difference value is the difference between the first trough value and the second trough value.

[0084] comparing the first fluctuation difference value or the second fluctuation difference value with a preset second threshold value;

[0085] If the first fluctuation difference value or the second fluctuation difference value is greater than the second threshold value, it is obtained that the first comparison result is that the toggle plate 4 is running abnormally, and if the first fluctuation difference value or the second fluctuation difference value is less than or equal to the second threshold value, it is obtained that the first comparison result is that the toggle plate 4 is running normally.

[0086] In the embodiment, since the positions of the wave peaks and the wave troughs of the measured fluctuation curve graph generated when the toggle plate 4 is abnormal are different from those of the standard fluctuation curve graph, that is, the maximum values and the minimum values of the two are different, here the first peak value in the measured fluctuation curve graph can be compared with the second peak value in the standard fluctuation curve graph to obtain the first fluctuation difference value, or the first wave trough in the measured fluctuation curve graph can also be compared with the second wave trough value in the standard fluctuation curve graph to obtain the second fluctuation difference value. Considering the influence of errors, a second threshold value is set here, and if the first fluctuation difference value or the second fluctuation difference value is greater than the second threshold value, it can be indicated that there is a risk of abnormal operation of the toggle plate 4, which also has the effects of fast response and accurate detection result.

[0087] As an optional embodiment, a measured motion trajectory graph of the moving jaw 1 in a motion cycle is obtained, including:

[0088] In the motion cycle, the coordinate positions of second detection points are obtained every second preset time; wherein the second detection points are mark points arranged on the moving jaw 1.

[0089] The coordinate positions of the plurality of second detection points are curve-fitted to obtain the measured motion trajectory graph.

[0090] In the embodiment, the image information of the moving jaw 1 can be collected every second preset time by a camera or a camera head, and the coordinate positions of the second detection points in each image are recognized, and the coordinate positions of the plurality of second detection points are curve-fitted to generate the measured motion trajectory graph, which is high in accuracy. In other embodiments, a plurality of images can also be fused, and the plurality of second detection points can be displayed simultaneously in the fused images, and then the plurality of second detection points are curve-fitted to generate the measured motion trajectory graph.

[0091] As an optional embodiment, the measured motion trajectory graph is compared with a preset standard motion trajectory graph to obtain a second comparison result, including:

[0092] The measured motion trajectory graph is compared with the preset standard motion trajectory graph in terms of coincidence degree to obtain a second coincidence degree difference value;

[0093] The second coincidence degree difference value is compared with a preset third threshold value;

[0094] If the second coincidence degree difference is greater than the third threshold value, a second comparison result is obtained that the toggle plate 4 is running abnormally, and if the second coincidence degree difference is less than or equal to the third threshold value, the second comparison result is obtained that the toggle plate 4 is running normally.

[0095] In the embodiment, since the measured motion trajectory graph generated when the toggle plate 4 is abnormal is obviously different from the contour of the standard motion trajectory graph, the measured motion trajectory graph and the standard motion trajectory graph are compared in terms of coincidence degree here, that is, the second coincidence degree difference is obtained, which is the area of the intersection or non-common region after the measured motion trajectory graph and the standard motion trajectory graph are fused with the center of the ellipse. Similarly, considering the influence of errors, a third threshold value is set here, and when the second coincidence degree difference is greater than the third threshold value, it indicates that there is a risk of toggle plate 4 running abnormally.

[0096] As an optional embodiment, after the alarm information is sent, the method further comprises:

[0097] A shutdown control signal is sent to control the jaw crusher to stop running.

[0098] In the embodiment, after the alarm information is sent to inform the staff, a shutdown control signal is immediately sent to control the jaw crusher to stop running, so as to avoid the situation that the staff cannot arrive in time and the jaw crusher continues to run, causing more loss, thereby reducing the equipment loss.

[0099] Embodiment 2

[0100] Based on the same inventive idea as the foregoing embodiments, referring to Figures 1-6 The embodiment provides a jaw crusher toggle plate failure online monitoring system, which comprises:

[0101] A curve graph acquisition module is configured to acquire a measured fluctuation curve graph of the moving jaw 1 in a motion cycle; wherein the motion cycle is a cycle in which the moving jaw 1 completes at least one reciprocating motion;

[0102] A first comparison module is configured to compare the measured fluctuation curve graph with a preset standard fluctuation curve graph to obtain a first comparison result; wherein the standard fluctuation curve graph is a fluctuation curve graph formed when the moving jaw 1 is running normally, and the first comparison result includes that the toggle plate 4 is running normally or the toggle plate 4 is running abnormally.

[0103] A first data processing module is configured to return to acquire the measured fluctuation curve graph of the moving jaw 1 in the motion cycle if the first comparison result is that the toggle plate 4 is running normally, and acquire the measured motion trajectory graph of the moving jaw 1 in the motion cycle if the first comparison result is that the toggle plate 4 is running abnormally.

[0104] The second comparison module is configured to compare the measured movement trajectory graph with a preset standard movement trajectory graph to obtain a second comparison result, wherein the standard movement trajectory graph is a movement trajectory graph formed by the moving jaw 1 in normal operation, and the second comparison result includes that the toggle plate 4 is in normal operation or the toggle plate 4 is in abnormal operation.

[0105] The second data processing module is configured to return to acquire the measured fluctuation curve graph of the moving jaw 1 in a movement cycle if the second comparison result is that the toggle plate 4 is in normal operation, and send an alarm information if the second comparison result is that the toggle plate 4 is in abnormal operation.

[0106] The related explanations and examples of the modules in the device of the embodiment can refer to the method of the foregoing embodiment, and will not be described here.

[0107] Embodiment 3

[0108] Based on the same inventive concept as the foregoing embodiments, the embodiment provides a computer device, which comprises a memory and a processor, the memory stores a computer program, and the processor executes the computer program to realize the method described above.

[0109] Embodiment 4

[0110] Based on the same inventive concept as the foregoing embodiments, the embodiment provides a computer readable storage medium, which stores a computer program, and a processor executes the computer program to realize the method described above.

[0111] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for online monitoring of elbow plate failure in a jaw crusher, characterized in that, The method comprises the following steps: obtaining a measured fluctuation curve of the moving jaw in a movement cycle; wherein the movement cycle is a cycle in which the moving jaw completes at least one reciprocating motion; the obtaining of the measured fluctuation curve of the moving jaw in the movement cycle comprises: in the movement cycle, obtaining a distance value between a distance detection sensor and a first detection point every first preset time interval to obtain a distance data set; wherein the distance detection sensor is a position point of a distance detection sensor arranged inside the jaw crusher, and the first detection point is a target point arranged on the moving jaw and close to the distance detection sensor; and generating a measured fluctuation curve according to the distance data set; comparing the measured fluctuation curve with a preset standard fluctuation curve to obtain a first comparison result; wherein the standard fluctuation curve is a fluctuation curve formed by the moving jaw when it is in normal operation, and the first comparison result includes normal operation of the toggle plate or abnormal operation of the toggle plate; if the first comparison result is normal operation of the toggle plate, returning to the obtaining of the measured fluctuation curve of the moving jaw in the movement cycle, and if the first comparison result is abnormal operation of the toggle plate, obtaining a measured motion trajectory of the moving jaw in the movement cycle; the obtaining of the measured motion trajectory of the moving jaw in the movement cycle comprises: in the movement cycle, obtaining a coordinate position of a second detection point every second preset time interval; wherein the second detection point is a mark point arranged on the moving jaw; and performing curve fitting on the coordinate positions of a plurality of second detection points to obtain a measured motion trajectory; comparing the measured motion trajectory with a preset standard motion trajectory to obtain a second comparison result; wherein the standard motion trajectory is a motion trajectory formed by the moving jaw when it is in normal operation, and the second comparison result includes normal operation of the toggle plate or abnormal operation of the toggle plate; if the second comparison result is normal operation of the toggle plate, returning to the obtaining of the measured fluctuation curve of the moving jaw in the movement cycle, and if the second comparison result is abnormal operation of the toggle plate, sending an alarm message.

2. A method of elbow plate failure on-line monitoring of a jaw crusher as claimed in claim 1, characterized in that, The comparison of the measured fluctuation curve with the preset standard fluctuation curve to obtain the first comparison result comprises: comparing the measured fluctuation curve with the preset standard fluctuation curve in terms of coincidence degree to obtain a first coincidence degree difference value; comparing the first coincidence degree difference value with a preset first threshold value; if the first coincidence degree difference value is greater than the first threshold value, obtaining the first comparison result as abnormal operation of the toggle plate, and if the first coincidence degree difference value is less than or equal to the first threshold value, obtaining the first comparison result as normal operation of the toggle plate.

3. A method of elbow plate failure on-line monitoring of a jaw crusher as claimed in claim 1, characterized in that, The comparison of the measured fluctuation curve with the preset standard fluctuation curve to obtain the first comparison result comprises: obtaining a first peak value or a first trough value in the measured fluctuation curve; obtaining a second peak value or a second trough value in the preset standard fluctuation curve; obtaining a first fluctuation difference value or a second fluctuation difference value; wherein the first fluctuation difference value is a difference value between the first peak value and the second peak value, and the second fluctuation difference value is a difference value between the first trough value and the second trough value; comparing the first fluctuation difference or the second fluctuation difference with a preset second threshold value; if the first fluctuation difference or the second fluctuation difference is greater than the second threshold value, a first comparison result is obtained that the toggle plate is running abnormally, and if the first fluctuation difference or the second fluctuation difference is less than or equal to the second threshold value, the first comparison result is obtained that the toggle plate is running normally.

4. The online monitoring method for jaw crusher toggle plate failure as described in claim 1, characterized in that, comparing the measured motion trajectory graph with a preset standard motion trajectory graph to obtain a second comparison result, comprising: comparing the measured motion trajectory graph with a preset standard motion trajectory graph to obtain a second coincidence difference value; comparing the second coincidence difference value with a preset third threshold value; if the second coincidence difference value is greater than the third threshold value, a second comparison result is obtained that the toggle plate is running abnormally, and if the second coincidence difference value is less than or equal to the third threshold value, the second comparison result is obtained that the toggle plate is running normally.

5. A method of elbow plate failure on-line monitoring of a jaw crusher as claimed in claim 1, characterized in that, after sending the alarm information, further comprising: sending a shutdown control signal to control the jaw crusher to stop running.

6. A jawbreaker toggle failure online monitoring system, characterized in that, comprising: a curve graph acquisition module, configured to acquire a measured fluctuation curve graph of a moving jaw in a motion cycle; wherein the motion cycle is a cycle in which the moving jaw completes at least one reciprocating motion; the acquisition of the measured fluctuation curve graph of the moving jaw in the motion cycle comprises: in the motion cycle, acquiring a distance value between a distance detection point and a first detection point every first preset time to obtain a distance data set; wherein the distance detection point is a position point of a distance detection sensor arranged in the jaw crusher, the first detection point is a target point arranged on the moving jaw, and the first detection point is close to the distance detection sensor; and a measured fluctuation curve graph is generated according to the distance data set; a first comparison module, configured to compare the measured fluctuation curve graph with a preset standard fluctuation curve graph to obtain a first comparison result; wherein the standard fluctuation curve graph is a fluctuation curve graph formed by the moving jaw when running normally, and the first comparison result includes that the toggle plate is running normally or abnormally; a first data processing module, configured to return to the acquisition of the measured fluctuation curve graph of the moving jaw in the motion cycle if the first comparison result is that the toggle plate is running normally, and to acquire a measured motion trajectory graph of the moving jaw in the motion cycle if the first comparison result is that the toggle plate is running abnormally; the acquisition of the measured motion trajectory graph of the moving jaw in the motion cycle comprises: acquiring a coordinate position of a second detection point every second preset time in the motion cycle; wherein the second detection point is a marker point arranged on the moving jaw; and a curve fitting is performed on the coordinate positions of a plurality of second detection points to obtain a measured motion trajectory graph; a second comparison module, configured to compare the measured motion trajectory graph with a preset standard motion trajectory graph to obtain a second comparison result; wherein the standard motion trajectory graph is a motion trajectory graph formed by the moving jaw when running normally, and the second comparison result includes that the toggle plate is running normally or abnormally; The second data processing module is configured to return to the acquisition of the actual fluctuation curve of the moving jaw in the movement cycle if the second comparison result is that the toggle plate is normal, and send an alarm information if the second comparison result is that the toggle plate is abnormal.

7. A computer device, comprising: The computer device comprises a memory and a processor, the memory stores a computer program, and the processor executes the computer program to realize the method in any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the processor executes the computer program to realize the method in any one of claims 1-5.

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